Cushion tire



7711 3222 Brubakaz:

W; A. BRUBAKE'R cusruon has ori in; Filed Dec,

Reiu ued July 15, 1924.

UNITED. STATES WILLlAM A. BRUBAKER. or more. onto.

ousmon TIRE Original No. 1,414,252, dated April 25, 1922, Serial No. 525.553,. filed December 29, 1921.

' reissue filed February 1.

To all whom it may cancer-a:

Be it known that I, lLLIAM A. BRUaA KER, a citizen of the United States,-residin r at Akron, in the county of Summit an and useful Improvement in Cushion Tires, of which the following is afull, clear, and exact description; reference being had to the accompanying drawings. D

My invention relates to cushion tires and e p "'ncipal object ot' my invention is'to provi e a cushion tire easy to manufacture, so formed as to minimize the likelihood of wave formation in the cushion portions, so formed as to constantly carry the load partly on air and artly on rubber, so formed as to yield readi y under blows or impacts and to thus simulate as closely as possible the resiliency of a structed that t substantially the same at every point about the periphery of the tire. In the drawings accompanyin this specification and forming a part poses of illustration, one form which my invention may assume. In these drawings:

igure 1 is a perspective view of this illustrative embodiment of my invention showing also a section on the line ll of 2, while igure 2 is a section on the line 2" -2 of 1. V tire herein shown comprises a base region 11 secured to a rim 12 of any suitable construction, a tread region 13 carrying a ribbed tread 14', and an intermediate region 15 disposed between the base region ll-and the treadregion l3 cll'cctive to firmly connect the base region ll and the tread region 13 and formed to accomplish the objects of my invention. p

In the present embodiment of my invention I attain these results by forming inthe intermediate region 15 a. plurality of recesses 16 arranged in two sets each extending inwardly from one of the two lateral faces 17 of theinterrnediate re ion 15 and in this particular embodiment o my invention the recesses 16 of each set are arranged in staggered relation to the recesses 16 of the other set-and each recess 16 of either set'is.of a

enerally square cross-section formed by the aces l8 and 19 -generally perpendicular to the radial line passing through the center thereof and the faces 20 and 21 generally State of Ohio, have invented a certain new lpneumatic tire, and so con e resistance to yielding ls ereof I have shown, for purl.

Application for 1924. Serial No, 690,097.

parallel to the axial plane through the center of thg rcccss 16. In this embodiment. however. this square cross-section modified by the presence of the four illcllncd surfaces 22 extending between the main surfaces 18. 20, 19. and :21. while each of the recesses 16 is terminated by :1 pair of plane surfaces 23 and :24 each lying in n radial plane disposed at an angle to the median plane of the time equal to that angle at which the other is disposed to such lllt'tlldll plunc whereby the faces 23 and 24 of any one recess [(3 are parallel respecliycly to the Faces -0 and 24 of every other recess lb. The rcccsscs n; arc cach symmetrical. and the wall or web scpurnl ing the recesses is also 5 \'Illllltil'i\'1ll.

The formation of these recesscsylti causes the intermediate region 15 to consist of'a web 25 itself consisting f a peripherally extending sinuous rib 26 flanked on each side by a scricsof laterally extending fins 27, while the dimensions and positioning of these recesses 16 results in forming the rib 26 and fins 27 of a width less than the height thereof and less-than, the circumferential ex tent of each recess 16.

Because ofthc sinuousity ol' the rib 26 and the spaced relation of the fins 2? wave 'l'orination in the intermcdiaie region 15 is directly supported rubber: because of the dimensions and zirrungclncnl of the various portions of the \\'cb 25; every part of the web 25 may yield readily and will rcndily absorb any shocli imposed upon thc 1 irc: and because of the general proporlioniup and arrangement of parts the resistance of the tire to compression is substantially. uniform :it every point about the circunifcrencc ol' ll|c lire,

It will be understood by those skilled in the art that these results may be attained by constructions other than the one specifically disclosl-d and that the nttuinment of thesorcsults is affected by such factors as the width of the fins relative to the width of the apertures, the width of the' fins relative to the width of the rib, the height of the web relative to the width of the web, the relative height of the web at.

herein vention.

From the above descri tion it will be obvious to those skilled in t e art that the particular embodiment of my invention herein shown accomplishes the objects of my in- It will also be obvious to those skilled in the art that various other ph sical constructions would also accomplish 1 these objects and that the particular embodiment herein shown and described may be variously changed and modified without sacrificing the advantages of my invention or de arting from the spirit thereof. It will t ere-fore be understood that the disclosure herein is illustrative only and that my invention is not limited thereto except as it may be specifically so limited by the ap nde claims.

claim:

1. A cushion tire'comprising an annular elastic body provided on each lateral side with a circumferentially extending series of recesses which project into the tire body to a point approximately central thereof, each recess being provided at its inner end with two walls which meet at an an le along a line running with a radius of tie tire and each of said walls being disposed in arallel.relation to a similar wall of one o the recesses on .the other side of the tire.

2. A cushion tire comprising an annular elastic body provided on each lateral side with recesses which project therein to a point approximately central thereof in parallel spaced relation to the axis of the tire, the recesses on one side of the tire being alternately arranged in respect to the recesses on the other side thereof and each recess provided at its inner end with walls which intersect at an angle along a line running with a radius of the tire. said recesses bcing arranged to provide a solid portion which extends in a series of sharp turns circumferentially of the .tire.

I 3. A tire comprising an annular elastic body having a plurality of holes in each of its sides, each of said holes having parallel side walls which terminate in spaced relation to the center of the tire body and each being provided with two end walls, which are disposcd at an angle to said side walls and at an angle to each other so as to intersect along' a line running with a radius of the tire.

4. A tireconiprising an annular elastic body having a plurality of holes in each of its sides, each of said holes being of uni form cross section and extending into the tire body in parallel relation to the axis thereof, each hole provided at the inner end thereof with walls which are disposed at an angle to the axis of the tire and intersect along a line running with a radius of the tire.

5. A tire comprising an annular elastic body having a plurality of holes in each of its sides. each of said holes being of uniform crossr'sectional contour and extending into the tire body in parallel relation to the axis thereof, each hole provided at the inner end thereof, with walls which are dissed at an angle to the axis of the tire and intersect along a line running with-a radius of the tire. each of said end walls being disposed in spaced parallel relation to an end from each angle in said central portion to opposite sides of the tire.

7. A cushion tire comprising an arinular base region, an annular tread re n, and an annular intermediate region isposed between said base region and said tread re- "ion andcomprising a central peripherall dxtendiug rib and a plurality of fins extend iug laterally from each side of said rib in peripherally spaced relation with the fins on' each side of said rib disposed opposite the spaces on the other side of said I'll) and of a width not greater than the heightthereof or than the width of the s aces on the other side of said rib, said ri being-not wider than the width of said fins.

8. A cushion tire comprising an annular base region, an annular tread re ion, and an annular intermediate region isposed' between said base region and said tread region and comprising a centralperipheralliy' extending rib and a plurality of fins exten ing laterally from each side of said rib in peripherally spaced relation with the fins on each side of said rib disposed opposite the spaces on the other side of said rib and I of a width not greater than the width of the spaces on the other side of said rib, said rib being not wider than the width of said fins.

9 A- cushion tire comprising an annular baseregion, an annular tread region, and V I an annular intermediate region disposed between said base region and said tread region and comprising a central periherally extending rib and a plur'ality o fins extending laterally from each side of said rib in peripherally spaced relation with the fins on each side of said rib disposed opposite the spaces on the other side of said rib and of a width not greater than the height thereofl or than the width of the spaces on the'other side of said -'rib and with said spaces extending from the exterior of said tire substantially to the cen' ter line of said tire and with relatively narrow.

10. A cushion tire comprising an'annular base region, an annular tread region, and an annular intermediate region disposed between said base region and said tread region and comprising a central peripheraly extending rib and a plurality of fins extending laterally from each side of sail ribin peripherally spaced relation with the fins oneach side of said rib extending onlv from those portions of said rib dispose intermediate the portions of said rib ,from which extend the fins on the other side of said rib and with the spaces between said fins extending fror'n'the exterior of said tire substantially to the center line". of said tire. and with saidrib thus rela: tively narrow. I a

11. A cushion tire comprising an annular base region, an annular'tread region, and an annular intermediate region disposed between said base region and said tread, region and comprising a central peripherally extending rib and a plurality of fins extending laterally from each side of said rib in peripherally s aced relation with the fins on each side 0? said rib disposed in staggered relation to the fins on-the other side of said rib'and with said rib-and. fins so formed that the resistance to compression of said intermediate-region is sub: stantially constant at all oints peripheralsaid rib thus ly of said tire and with t e spaces between said fins extending from the exterior of said tire substantially to the center line of said tire and with said rib thus rela lively narrow.

12. A cushion tire comprising an annular base region, an annular tread region, and an annular ,intermediate region disposed betnwn said base region and said tread region and comprising a central peri herally extending rib anda plurality o fins extending laterally from each side of said rib in peripherally spaced relation with the [ins on each side of said rib disposed opposite the spaces on the other sidoof said rib and of a width not greater than the width of the spaces on the other sidiof said rilr and with said spaces extending fromthe exterior of said tire sulistantially to the center lineol said tire and with said rib thus r lati-scly narrow.

ii A cushion tire comprising an annular basiregion, an annular tread region, and an annular inlcrnn-diute region disposed between said base region and said tread region and comprising a central peripherally ex tending sinuous rib and a plurality. of tins extending laterally from each side of 'said rib in periplu-rallv spaced relation with the tins on each side of said rib disposed o posite the spaces on the other side of sai rib and of a width not greater than tbe'hcight thereof or than the width of the spaces on the other side of said'rib, said rib being not wider than the width of said tins.

'14. A cushion tire comprising anannular base region. an annular tread region. and an annular intermediate region disposed between said base region and said tread region and comprising a central, peripherally ex tending sinuous rib and a plurality of tins extending laterallv 'Tronreach side ol' said rib in peripherally spat-ed relation with the fins on each Side of said rib disposed opposite the spaces on the other side o i aid rib and of .a width not greater than the width ol" the spaces on the Either side of said rib. said rib being not wider than the width of said 15. A cushion tirc comprising an annular base region, an annular tread region. and an annular intermediate region disposed between said base region and said tread region and comprising a central peripherally extendin sinuous rib and a plurality of fins extending laterally from each side of said rib in peri herally spaced relation with the iins on eacli'side of said rib disposed opposite the spnces on: the other side of said rib and of a width not greater than the height thereof or than the width of the spaces on the other side of said rib.

16. A cushion tire comprising an annular base region, an annular tread region. and an annular intermediate region disposed between said base region and said tread-region and comprising a'central peripherally ex--- tending siiill'rous rib anda plurality of fins extending laterally from each side of said rib in peripherally spaced relation with the fins on each sidelgt said rib extending only from those portions of said rib disposed in tel-mediatelbbportions of said rib from which extend ,the this said rib.

'lT. Aeushion tire con'iprising'an annular base regiom an annular tread region. and an annular intermediate region. disposed lietnct'usaid base region and said tread region and comprising a central poripherally exteiuling siiulous rib and a plurality of fins exleoding laterally from each side of said ribin peripherally spaced relation with the [ins on each side of said rib disposed in st germ-d relation to thctins on the other Sl e of said rib and with said riband fins so fornu-rl that Ila-resistance to compression of said intermmliate[region is substantially constant, at all points peripherally of said tire.

18. A cushion tire romprising an annular" base region, an annular t'readfregion, and an annular intermediate region disposed between said base region and said tread region and com 'irising a central peripherally extending sinuous rib and a plurality of on the other side'of lins extending laterally from each side of said rib in peripherally spaced relation with the fins on each side of said rib disposed opposite the spaces on the other side of said rib and of a width not greater than the width of the spaces on the other side of said rib.

15). A cushion tile comprising an annular base region, an annular tread region, and an annular intermediate re ion disposed between said base region and said tread region and comprising a central peripherally extending rib and a. plurality of fins extending laterally from each side of said rib in peto the center line of said tire and said rib being thus relatively narrow.

20. A cushion tire comprising an annular.

base region. an annular tread region, and an annular intermediate region disposed between said base region and said tread region and comprising a central peripherally extending rib and a plurality of fins extending laterally from each side of said rib invperipherally spaced relation with the fins on each side of said rib disposed opposite the spaces on the other side of said rib and of a Width not greater than the width of the spaces on the other side of said I'ib, said rib being not wider than the width 'of said has and said spaces extending from the exterior of said tire substantially to the center line of said the and said rib being thus relatively narrow.

WILLIAM A. BRUBAKER. 

